Hello Lakshmi,

It has been a while since you have made your post, in case you still need support I will be glad to assist you further. I suppose the other community members can benefit from this answer as well. I have been looking into your post and I suggest you see this video:

http://www.silverlight.net/archives/videos/getting-started-with-multiscaleimage-(deepzoom)

from the MSDN forum where it shown the functionality you want.

Feel free to write me if you have further questions.